chuzaoyin_5.m

利用MATLAB对声音文件调制解调

%脚龋 措 剧磊拳 棱澜 傈仿
for Nq=[8 6 4 2],
    x_Nq = round( x*2^(Nq-1) )/2^(Nq-1);
    Ps = mean( abs(x).^2);
    Pn = mean( abs(x-x_Nq).^2 );
    sqnr = 10*log10( Ps / Pn );
    fprintf('^d bit : SQNR = %f dB ⊥n', Nq, sqnr );
    wavplay( x_Nq, Fs);
end